Security and battery life loading speed of RAM

Budget first and then battery around 3000mah is enough with fast charging and camera  ram   internal storage  operating system and finally overall performance

Performance and RAM is my key concern while buying a new device.

Functionality is the most important thing in a smartphone.

I need my phone to be good at:
Playing music
Making mobile payments with NFC
Being compatible with Google Play Store apps
Connecting to networks, Bluetooth and GPS quickly and working well
Not needing to worry about the battery or having to charge everyday
Being scratch-proof and indestructible

Everyone would agree that they are very important features that any modern phone should be capable of.

I prefer the Camera for the good shot especially on the manual mode

Actually, all of the above are equally important to me. But, if I had to distinguish 4 of them, it would be battery, OS (..and the security it brings), RAM and storage.

Processor--ram-internal storage--camera--os

For me the most important is higher RAM with low price

Battery capacity
RAM size
CPU / GPU
Android version
Camera
Internal memory / ability to use external SD

For me:
1. Up to date operating system
2. RAM
3. Pixel density index 300+
4. Price
5. Screen size (5.5+)